#include<bits/stdc++.h>
#define y1 Y1
#define fi first
#define endl "\n"
#define se second
#define PI acos(-1)
#define int long long
#define pb(x) push_back(x)
#define PII pair<int, int>
#define Yes cout << "Yes\n";
#define No cout << "No\n";
#define YES cout << "YES\n";
#define NO cout << "NO\n";
#define _for(i, a, b) for(int i = a; i <= b; ++i)
#define IOS ios::sync_with_stdio(false),cin.tie(0),cout.tie(0)
using namespace std;

const int N = 2e5 + 10;
const int mod = 1e9 + 7;

int n, m, t, ret;
string s;

// 1 > 2 > 3 > 1;

signed main() {
	IOS;
	int a, b;
	cin >> a >> b;
	if(a == b) {
		cout << 'p' << endl;
	} else if(a > b) {
		if(a == 3 && b == 1) {
			cout << "a" << endl;
		} else {
			cout << "b" << endl;
		}
	} else {
		// a < b 
		if(a == 1 && b == 3) {
			cout << "b" << endl;
		} else {
			cout << "a" << endl;
		}
	}
	return 0;
}


